The Radford College board chair has announced she is stepping down at the end of the school term, citing attacks on her character.

The school received backlash from parents, after the fees were significantly raised at the beginning of the year, with a group of parents pushing for the Anglican Diocese to remove Vicki Williams as board chair.

The Canberra Times reports that in a letter to the school community, Ms Williams said some of the commentary directed at her has moved beyond disagreement about decisions and into attacks on her character.